"Stanford doctoral candidate Jonathan Mayer claims to have found several security weaknesses in the online course platform Coursera.
Mayer, who is set to teach a Coursera class this October for Stanford, posted on his blog last week that the weaknesses could allow an unauthorized third-party access to student information. He said Coursera’s privacy protecting user IDs are not effective enough.
The University has hosted many courses of Coursera and plans to launch more this fall.
“Any teacher can dump the entire user database, including over 9 million names and email addresses,” Mayer said. “If you are logged into your Coursera account, any website that you visit can list your course enrollments.”"